THE TX 25 PLUS AND TX 250 PLUS FM EXCITERS ARE DESIGNED TO ACCEPT STEREO MONO MPX AUDIO SIGNALS TO BE MODULATED IN FM AND TO AMPLIFY THE RF.
THE TX 25 PLUS AND TX 250 PLUS FM ARE EQUIPPED WITH AN INNOVATIVE AND HIGH-PERFORMANCE POWER SUPPLY STAGE
«SWITCHING-MODE MAINS DIRECT», WITHOUT MAINS TRANSFORMER (THE MAINS VOLTAGE CAN VARY FROM 80 TO 265 VAC WITH NO
VARIATION ON THE OUTPUT POWER).
MAJOR FEATURES INCLUDE HIGH INSULATION FROM MAINS, HIGH OVERALL EFFICIENCY, MODULAR DESIGN FOR FRIENDLY MAINTENANCE, COMPLIANCE WITH EUROPEAN NOrms EN61000-4-3 AND LONG TERM
RELIABILITY.
IN THESE FM EXCITERS, AN AGC AUDIO CIRCUIT CONTROL IS INCLUDED TO KEEP THE MODULATION LEVEL BELOW THE MAXIMUM FIGURES ALLOWED IN COMPLIANCE WITH CEPT/ERC 5401 E.
THE RF OUTPUT SPECIFICATIONS HAVE BEEN DRASTICALLY IMPROVED, THUS OBTAINING FIGURES WHICH ARE COMPARABLE TO DIGITAL TRANSMITTERS.
THESE FM EXCITERS CAN BE CONTROLLED LOCALLY BY A PC OR REMOTELY BY MODEM.
THE TX 25 PLUS IS A COMPLETELY SOLID STATE EXCITER, FREQUENCY AGILE CONTROLLABLE FROM THE FRONT PANEL WITH ADJUSTABLE OUTPUT POWER UP TO 25 W.
THE POWER DEVICE USED TO OBTAIN 25 W IS THE PHILIPS BLF 245.
IN TX 250 PLUS FM EXCITER, WHICH CAN BE USED AS A STAND-ALONE TRANSMITTER AS WELL, A POWER AMPLIFIER MODULE WITH THE POWER DEVICE PHILIPS 278, ABLE TO GRANT 250 W OUTPUT POWER IN THE ENTIRE FREQUENCY RANGE HAS BE ADDED.